<template>
  <view class="container">
    <!-- 空白页 -->
    <empty v-if="loadingType === 'nomore' && favoriteList.length === 0"></empty>
    <view class="favorite-list">
      <block v-for="(item, index) in favoriteList" :key="index">
        <view class="favorite-item" :class="{'b-b': index!==favoriteList.length-1}" @click="toProductDetail(item)">
          <view class="image-wrapper">
            <image :src="item.img" :class="[item.loaded]" mode="aspectFill" lazy-load @load="onImageLoad('favoriteList', index)" @error="onImageError('favoriteList', index)"></image>
          </view>
          <view class="item-right">
            <text class="clamp title">{{item.title}}</text>
            <text class="attr">{{item.description}}</text>
            <text class="attr">累计销售{{item.sales}}件</text>

            <text class="price"><text v-if="item.originalPrice > (isVip?item.vipPrice:item.price)" style="text-decoration:line-through">¥{{item.originalPrice / 100.0}}</text>
              ¥{{(isVip?(item.vipPrice / 100.0 + ' [VIP]'):item.price / 100.0)}}</text>

          </view>
          <text class="del-btn yticon icon-fork" @click.stop="deleteFavorite(item)"></text>
        </view>
      </block>
    </view>

  </view>
</template>

<script>
import uniLoadMore from '@/components/uni-load-more/uni-load-more.vue'
import empty from '@/components/empty'
export default {
  components: {
    uniLoadMore,
    empty,
  },
  data() {
    return {
      favoriteList: [],
      pageNo: 1,
      loadingType: 'more',
      isVip: false,
    }
  },
  onShow() {
    this.isVip = this.$api.isVip()
  },
  onLoad(options) {
    this.loadData()
  },
  //下拉刷新
  onPullDownRefresh() {
    this.loadData('refresh')
  },
  //加载更多
  onReachBottom() {
    this.loadData()
  },
  methods: {
    //获取收藏列表
    loadData(type) {
      const that = this
      if (type === 'refresh') {
        that.pageNo = 1
        that.favoriteList = []
        that.loadingType = 'more'
      }
      if (that.loadingType === 'more') {
        that.loadingType = 'loading'
        that.$api
          .request('favorite', 'list', {
            pageNo: that.pageNo,
          })
          .then((res) => {
            that.pageNo = res.data.pageNo + 1
            that.loadingType =
              res.data.pageNo < res.data.totalPageNo ? 'more' : 'nomore'
            res.data.items.forEach((item) => {
              that.favoriteList.push(item)
              if (type === 'refresh') {
                uni.stopPullDownRefresh()
              }
            })
          })
      }
    },
    deleteFavorite(item) {
      const that = this
      uni.showModal({
        title: '删除提示',
        content: '您确定要删除该收藏吗？',
        showCancel: true,
        confirmText: '删除',
        success: (e) => {
          if (e.confirm) {
            that.$api
              .request('favorite', 'delete', {
                spuId: item.spuId,
              })
              .then((res) => {
                that.loadData('refresh')
              })
          }
        },
        fail: () => {},
      })
    },
    toProductDetail(item) {
      uni.navigateTo({
        url: '/pages/product/detail?id=' + item.spuId,
      })
    },
    //监听image加载完成
    onImageLoad(key, index) {
      this.$set(this[key][index], 'loaded', 'loaded')
    },
    //监听image加载失败
    onImageError(key, index) {
      this[key][index].image = '/static/errorImage.jpg'
    },
  },
}
</script>

<style lang="scss">
.container {
  padding-bottom: 134upx;

  /* 空白页 */
  .empty {
    position: fixed;
    left: 0;
    top: 0;
    width: 100%;
    height: 100vh;
    padding-bottom: 100upx;
    display: flex;
    justify-content: center;
    flex-direction: column;
    align-items: center;
    background: #fff;

    image {
      width: 240upx;
      height: 160upx;
      margin-bottom: 30upx;
    }

    .empty-tips {
      display: flex;
      font-size: $font-sm + 2upx;
      color: $font-color-disabled;

      .navigator {
        color: $uni-color-primary;
        margin-left: 16upx;
      }
    }
  }
}

/* 收藏列表项 */
.favorite-item {
  display: flex;
  position: relative;
  padding: 30upx 40upx;

  .image-wrapper {
    width: 230upx;
    height: 230upx;
    flex-shrink: 0;
    position: relative;

    image {
      border-radius: 8upx;
    }
  }

  .checkbox {
    position: absolute;
    left: -16upx;
    top: -16upx;
    z-index: 8;
    font-size: 44upx;
    line-height: 1;
    padding: 4upx;
    color: $font-color-disabled;
    background: #fff;
    border-radius: 50px;
  }

  .item-right {
    display: flex;
    flex-direction: column;
    flex: 1;
    overflow: hidden;
    position: relative;
    padding-left: 30upx;

    .title,
    .price {
      font-size: $font-base + 2upx;
      color: $font-color-dark;
      height: 40upx;
      line-height: 40upx;
    }

    .attr {
      font-size: $font-sm + 2upx;
      color: $font-color-light;
      height: 50upx;
      line-height: 50upx;
    }

    .price {
      height: 50upx;
      line-height: 50upx;
    }
  }
}
</style>
